Hi all,
There has been some discussion of the subject issue in this BLOG and quite a bit of mis-information has been passed.
The following extract from the Florida Statue will prove instructive:
NOTE the language "that is at least 75 feet high"... NO residential structure in CV meets this requirement:
REF:
http://www.flsenate.gov/cgi-bin/view_page.pl?Tab=session&Submenu=1&FT=D&File=hb712100.html&Directory=session/2006/House/bills/billtext/html/
(4)(a) Any person, firm, or corporation that owns or
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operates a residential multifamily dwelling, including a
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condominium, that is at least 75 feet high and contains a public
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elevator, as described in s. 399.035(2) and (3) and rules
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adopted by the Florida Building Commission, shall have at least
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one public elevator that is capable of operating on an alternate
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power source for emergency purposes. Alternate power shall be
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available for the purpose of allowing all residents access for a
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specified number of hours each day over a 5-day period following
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a natural disaster, manmade disaster, emergency, or other civil
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disturbance that disrupts the normal supply of electricity. The
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alternate power source that controls elevator operations must
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also be capable of powering any connected fire alarm system in
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the building.
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In a somewhat related issue, any new "Upgrade of an elevator to current code"
Will require replacement of the ancient analog solonoid/relay controllers to a Solid State integrated circuit board controller.
These boards are not at all unlike a computer Mother Board and they are sensitive to high temperatures, circa 90 degrees plus; thus your upgraded elevator machine room will require air conditioning to prevent failure of the new controller.
REF:
The currently adopted edition of ASME A17.1, requires the following:
2.7.9.2 Temperature and Humidity. Machinery spaces, machine rooms, control spaces, and control rooms shall be provided with natural or mechanical means to keep the ambient air temperature and humidity in the range specified by the elevator equipment manufacturer to ensure safe and normal operation ofthe elevator. The temperature and humidity range shall be permanently posted in the machine room, control room, control space, or where specified by the equipment manufacturer, in the machinery space.Thus there must be a means to keep the temperature and humidity within the operating parameters set forth by the controller manufacturer. How it is to be achieved is not specified.
Mark J. Boutin
Deputy Chief
Bureau of Elevator Safety
(850) 921-2468
Dave israel
Sunday, June 29, 2008
ELEVATORS AND EMERGENCY POWER
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2 comments:
Dave, "Upgrade of an elevator to current code" has its own set of problems which may be somewhat different from the 75 ft. rule. Does your research show what is required beyond electrical? How about the piston,elevator car, etc.
Hi Larry,
The 75 foot rule is in no way impacted by Upgrading to current code, that rule is pristine regarding old or new systems.
The principal infrastructure involved is:
1) Controller
2) hydraulic pump
3) Operator panel (Braille, annunciator bell/light
4) Car grab bar along rear wall
5) Connection to fire alarm system
6) Fire sprinkler at top of shaft if none currently exists.
7) There may be a requirement to
Air Condition the Machine Room to protect the Solid State Controller, which is subject to high temperature (90 degrees plus) instability.
Those are the main issues.
As for the drive piston, there are only 6 elevators in CV which require attention, based on the Single/Double bottom jack problem.
Those are; The Clubhouse (upgraded during reconstruction), and Wellington A - E; The status of the Wellington machines is unknown to me. But they must either prove they have a Double Bottom Jack, or have the Jacks pulled for inspection.If they are single bottom jacks they must be replaced.
Single bottom jacks are subject to catastrophic failure and collapse.
When upgrading your elevator to code there is no requirement to redrill the hole if it would be required to accomodate a piston covering.
If the piston is in good shape, IE absent electrolitic corrosion, there is no need to replace it during the upgrade.
There is an option to replace the standard Hydraulic Fluid, with a modified vegetable oil if one is concerned with dirty oil leaks, which can be an environmental issue.
Dave
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